CN212206601U - Loading type brake detection equipment - Google Patents

Abstract

The utility model discloses a loading type brake detection device, which relates to the technical field of automobile performance detection and comprises a base and a brake detection platform, wherein two groups of roller groups are rotationally arranged in the brake detection platform, each roller group comprises a main roller and an auxiliary roller, and a third roller is rotationally arranged between the main roller and the auxiliary roller; the bottom of the brake detection platform is provided with a lifting assembly; the lifting assembly comprises an air spring arranged on the base; a plurality of air springs are arranged along the inner bottom surface of the base in a rectangular array; the air spring vertically extends upwards and is fixed with the bottom of the brake detection table. The utility model discloses have and to be convenient for adjust the mounting height that the car braking examined test table for it is up to standard to be surveyed the adhesive force of wheel on the cylinder, with the effect that improves car brake performance and detect the accuracy.

Description

Loading type brake detection equipment

Technical Field

The utility model belongs to the technical field of the car performance detects technique and specifically relates to a loading type braking check out test set is related to.

Background

At present, the automobile braking performance is an important index and a necessary item of the automobile operation safety technical condition, and the quality of the automobile braking performance is directly related to the road traffic safety. When the braking performance of an automobile is actually detected, the automobile braking inspection bench is widely used for mainly detecting the braking force states of front and rear wheel sets of the automobile, and parameters such as braking force, braking force balance, wheel retarding force, braking coordination time and the like of the front and rear wheel sets, the left and right wheels of the automobile can be detected through braking detection equipment.

The prior Chinese utility model with publication number CN204043924U discloses a roller reaction type brake detection table, which comprises a driving roller, a driven roller, a driving device, a lifter and a chain wheel; the driving roller and the driven roller are arranged on the rack in parallel and are connected by a chain; the lifting device is arranged between the measuring rollers, and the driving device is arranged inside the driving roller.

The above prior art solutions have the following drawbacks: the installation height of the brake detection platform in the brake detection platform is fixed, and when the brake performance of the automobile is detected, partial wheels of the automobile are difficult to be in a horizontal state in the detection process due to different diameters of the wheels. When the installation height of the brake detection platform is low, the non-tested wheels are on the ground during the detection of the multi-axle vehicle, the tested wheels are positioned on the brake detection platform, and due to the connection relationship between the axles and the action of the connecting parts of the axles, the phenomenon that the tested wheels are overhead is easy to occur, so that the attachment weight of the tested wheels on a roller on the detection platform is reduced, the ratio (braking rate) of the weight of the tested wheels to the weight (braking rate) measured on the ground axle weight platform is difficult to reach the standard, and finally the braking capacity of the automobile.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an add-on braking check out test set, its mounting height that can be convenient for adjust the car braking and examine test table for the adhesive force of wheel on the cylinder is up to standard by the survey, with the accuracy that improves car braking performance and detect.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a loading type brake detection device comprises a base and a brake detection table arranged in the base, wherein a roller group is rotationally arranged in the brake detection table, a driving motor used for driving the roller group to rotate is further installed in the brake detection table, the roller group comprises a main roller and an auxiliary roller, a third roller is rotationally arranged between the main roller and the auxiliary roller, and two roller groups are symmetrically arranged along the central axis of the brake detection table in the length direction; the axes of the main roller, the auxiliary roller and the third roller are parallel to each other; the bottom of the brake detection table is provided with a lifting assembly for adjusting the height of the brake detection table; the lifting assembly comprises an air spring arranged on the base; a plurality of air springs are arranged along the inner bottom surface of the base in a rectangular array; the air springs vertically extend upwards and are symmetrically arranged in two groups along the central axis of the brake detection table in the length direction, and the two groups of air springs and the bottom of the brake detection table are fixed with the roller groups; the axes of the main roller, the auxiliary roller and the third roller are parallel to each other; the bottom of the brake detection table is provided with a lifting assembly for adjusting the height of the brake detection table; the lifting assembly comprises an air spring arranged on the base; a plurality of air springs are arranged along the inner bottom surface of the base in a rectangular array; the air spring vertically extends upwards and is fixed with the bottom of the brake detection table.

By adopting the technical scheme, when a tester steps on the brake, a wheel of the automobile is tightly attached to the third roller, a reaction force which is opposite to the torque direction generated by the motor and is equivalent to the torque direction is added to the tangential direction of the surfaces of the main roller and the auxiliary roller by the wheel, under the action of the formed reaction force, the speed reducer between the driving motor and the main roller and the side force lever swing towards the opposite direction of the rotation of the rollers together, the brake sensor at one end of the side force lever is stressed, and an electric signal is output to the control box, so that the brake performance of the automobile is tested. Meanwhile, the rotating speed of the third roller changes, the rotating speed sensor connected with the third roller transmits an electric signal to the console, the console controls the driving motor to stop working, and the corresponding main roller and the corresponding auxiliary roller stop rotating, so that the automobile wheels are protected from being damaged by the main roller and the auxiliary roller. The lifting assembly is arranged, the air springs are driven to ascend synchronously, so that the brake detection platform can ascend along the base, the wheels to be detected are loaded, the height of the detected wheels is adjusted, the whole automobile is kept horizontal, or the detected wheels and the non-detected wheels of the multi-axle automobile are at the same horizontal height, the detected wheels are prevented from being lifted, and the accuracy of automobile brake performance detection is improved. The lifting of the air spring is rapid and reliable, and the maintenance is convenient.

The present invention may be further configured in a preferred embodiment as: and a guide device used for limiting the brake detection table to slide along the height direction of the base is arranged on the outer side of the brake detection table.

Through adopting above-mentioned technical scheme, set up guider, can play the guide effect when the air spring drive braking detects the platform and slides from top to bottom for the braking detects the platform and is more reliable and more stable when height-adjusting, can not produce the phenomenon of rocking.

The present invention may be further configured in a preferred embodiment as: the brake detection table and the base are both rectangular box structures with openings at the upper ends; the guiding device comprises a T-shaped block fixed on the outer side wall of the brake detection table; the number of the T-shaped blocks is four, and the four T-shaped blocks are respectively fixed on four outer side walls of the brake detection table; and a T-shaped groove matched with the T-shaped block is formed in the inner side wall of the base.

By adopting the technical scheme, because the length of the braking detection platform is longer, the T-shaped blocks for guiding are arranged on the periphery of the braking detection platform, and the stability is higher when the air spring drives the braking detection platform to ascend or descend.

The present invention may be further configured in a preferred embodiment as: the number of the air springs is four.

Through adopting above-mentioned technical scheme, set up four air springs, and four air spring array distributions can improve the support of examining test table to the braking for wait to detect wheel pressure when the braking examines test table, air spring drive braking examines test table and rises, can make the braking examine test table atress even, make the braking examine test table stability higher.

The present invention may be further configured in a preferred embodiment as: fixing seats are fixed at positions in the brake detection table and positioned at two ends of the third roller; one opposite sides of the two fixed seats are of an opening structure; a vertical fixing column is fixed in the fixing seat; a sliding sleeve is sleeved on the fixed column; a buffer spring is sleeved on the fixed column and positioned at the lower end of the sliding sleeve; the end part of the third roller is rotatably connected with the sliding sleeve.

Through adopting above-mentioned technical scheme, set up the fixed column for the third cylinder can only carry out vertical removal along the direction of height of fixed column when receiving the extrusion of wheel, makes the third cylinder can accurately receive pressure signal, judges that the wheel has got into brake drum, makes driving motor begin to operate.

The present invention may be further configured in a preferred embodiment as: dovetail grooves are formed in two opposite inner side walls of the fixed seat; the length direction of the dovetail groove is consistent with the height direction of the fixed seat; and dovetail blocks matched with the dovetail grooves are arranged on two sides of the sliding sleeve.

Through adopting above-mentioned technical scheme, set up the dovetail piece in the both sides of sliding sleeve, cooperate with the dovetail on the two opposition inside walls of fixing base and use, can further improve the steady line that the sliding sleeve reciprocated for the third cylinder can vertical removal.

The present invention may be further configured in a preferred embodiment as: a detection assembly for detecting a wheel to be detected is arranged in the brake detection table; the detection assembly comprises a photoelectric switch arranged in the brake detection platform and positioned on one side of the fixed seat and a proximity sensor arranged in the brake detection platform and positioned right below the third roller; and a rotating speed sensor is arranged on the third roller.

Through adopting above-mentioned technical scheme, when the wheel that awaits measuring drives on the braking and detects the platform, install respectively in the photoelectric switch of two fixing bases one side and be sheltered from by waiting to incline the wheel, detect that the wheel is located the station, through the pressure signal that the third cylinder received, cooperation photoelectric switch can improve the accurate nature that whether the wheel that detects is located the station, and convenient follow-up operation driving motor detects the wheel that awaits measuring.

To sum up, the utility model discloses following beneficial effect has:

1. the lifting assembly is arranged, the air spring is driven to ascend synchronously, so that the brake detection platform can ascend along the base and load the wheel to be detected, the height of the wheel to be detected is adjusted, the whole automobile is kept horizontal, or the wheel to be detected and the wheel not to be detected of the multi-axle automobile are at the same horizontal height, the wheel to be detected is prevented from being lifted, the accuracy of automobile brake performance detection is improved, the air spring is lifted quickly and reliably, and the maintenance is convenient;

2. because the length of the brake detection platform is long, the stability is higher when the air spring drives the brake detection platform to ascend or descend by arranging the T-shaped blocks for guiding around the brake detection platform;

3. set up the dovetail piece in the both sides of sliding sleeve, cooperate with the dovetail on the two opposition inside walls of fixing base and use, can further improve the steady line that the sliding sleeve reciprocated for the third cylinder can vertical removal.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural diagram of a brake test platform and a base according to the present embodiment;

fig. 3 is a schematic view of the internal structure of the fixing base of the embodiment.

Reference numerals: 1. a base; 11. a T-shaped slot; 2. a brake detection table; 3. a roller set; 31. a main drum; 32. a sub drum; 4. a drive motor; 5. a third drum; 6. a fixed seat; 61. a dovetail groove; 62. fixing a column; 63. a sliding sleeve; 64. a dovetail block; 65. a buffer spring; 7. a lifting assembly; 71. an air spring; 8. a guide device; 81. a T-shaped block; 9. a detection component; 91. a photoelectric switch; 92. a proximity sensor.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses an add-on type braking check out test set, examine test table 2 including base 1 and braking, the braking is examined test table 2 and can be followed the direction of height setting that slides of base 1. The base 1 and the brake detection platform 2 are both rectangular box structures with openings at the upper ends.

Referring to fig. 1 and 2, a roller set 3 is rotatably provided in a brake detection table 2. The roller group 3 comprises a main roller 31 and an auxiliary roller 32, the surfaces of the main roller 31 and the auxiliary roller 32 are subjected to precision sand-bonding treatment, the roller is durable and wear-resistant, the service life is long, and the abrasion of tires is not easy to occur when the detected vehicle is detected at a low speed. Two sets of roller sets 3 are arranged symmetrically along the central axis of the brake detection table 2 in the length direction. The brake detection table 2 is internally provided with a driving motor 4 which is fixedly arranged on one side of each of the two sets of roller sets 3 which deviates from each other, chain wheels are fixedly arranged at the end parts of the main roller 31 and the auxiliary roller 32, chains are sleeved on the chain wheels of the main roller 31 and the auxiliary roller 32, an output shaft of the driving motor 4 is fixedly connected with the end part of the main roller 31, the chain transmission power is large and accurate, and the service life is long. The third drum 5 is rotatably provided between the main drum 31 and the sub drum 32. The third roller 5 adopts the finish steel chromium plating knurling treatment, and is reliable and safe in use. The axes of the main drum 31, the sub drum 32, and the third drum 5 are parallel to each other. In use, the surface of the main roller 31 or the auxiliary roller 32 with the reduced adhesion coefficient needs to be sandblasted in time so as to maintain or improve the adhesion coefficient between the tire and the main roller 31 or the auxiliary roller 32, and maintain and increase the capability of the testing braking force of the detection equipment.

Referring to fig. 2 and 3, fixing seats 6 are fixed at positions in the brake detection table 2 and at two ends of the third drum 5, and one opposite sides of the two fixing seats 6 are of an opening structure. Dovetail grooves 61 are all seted up on the two inside walls that the fixing base 6 is relative, and the length direction of dovetail groove 61 is unanimous with the direction of height of fixing base 6. A vertical fixing column 62 is fixed in the fixing seat 6, a sliding sleeve 63 is sleeved on the fixing column 62, and dovetail blocks 64 matched with the dovetail grooves 61 are fixed on two sides of the sliding sleeve 63. The end of the third roller 5 is rotatably connected with the sliding sleeve 63. The fixed column 62 is sleeved with a buffer spring 65 at the lower end of the sliding sleeve 63, one end of the buffer spring 65 is abutted against the lower end face of the sliding sleeve 63, and the other end of the buffer spring 65 is abutted against the inner bottom wall of the fixed seat 6.

Referring to fig. 2, in order to adjust the height of the brake sensing platform 2, a lifting assembly 7 is installed at the bottom of the brake sensing platform 2. The lifting assembly 7 comprises four air springs 71, the number of the air springs 71 is four along the rectangular array of the inner bottom surface of the base 1, and the air springs 71 vertically extend upwards and are fixed with the bottom of the brake detection table 2.

Referring to fig. 2, a guide device 8 is installed around the brake test platform 2 to limit the brake test platform 2 from sliding vertically along the height direction of the base 1. The guide device 8 includes four T-shaped blocks 81, the four T-shaped blocks 81 are fixed to four outer side walls of the brake detection table 2, respectively, and the T-shaped blocks 81 are arranged along the height direction of the brake detection table 2. The four inner side walls of the base 1 are respectively and correspondingly provided with T-shaped grooves 11 matched with the four T-shaped blocks 81.

Referring to fig. 3, a detection assembly 9 is installed in the brake detection table 2, and the detection assembly 9 includes a photoelectric switch 91, a proximity sensor 92, and a rotation speed sensor. Photoelectric switch 91 is fixedly mounted in brake detection table 2, and the transmitter and the receiver of photoelectric switch 91 are located the same side of two fixing bases 6 respectively. The proximity sensor 92 is fixedly installed in the brake detection table 2, and a detection surface of the proximity sensor 92 faces to a position right below the third roller 5, and is used for receiving a pressure signal transmitted from the third roller 5. When the vehicle is on the brake detection table 2, the third roller 5 is pressed down by the wheel, the proximity sensor 92 on the third roller 5 receives the pressure signal, the photoelectric switch 91 and the proximity sensor 92 are integrated to judge that the wheel to be detected enters the brake detection table 2, and the driving motor 4 is started to drive the wheel. The rotating speed sensor is fixedly arranged on the third roller 5, when the detected vehicle is braked on the brake detection platform 2 during brake detection, when the wheel is braked and locked to generate slippage, and the third roller 5 rotates and drops to 70% -90% of the linear speed of the roller, the third roller 5 sends a signal command to stop the driving motor 4, and the function of protecting the tire is achieved.

The implementation principle of the embodiment is as follows: the automobile to be tested is driven onto the automobile brake detection platform 2, wheels are placed between the main roller 31 and the auxiliary roller 32, the air spring 71 is started to adjust the automobile brake detection platform 2 to a proper height, the head and the tail of the automobile are at the same horizontal height, the wheel to be tested is detected to be located on a station through the detection assembly, the driving motor 4 is started to detect the brake performance of the automobile, the detection process is the prior art, and the description is omitted. The height of the automobile brake detection platform 2 is adjusted through the air spring 71, the corresponding automobile is horizontally fixed, and an included angle between the automobile and the horizontal plane is avoided, so that the automobile brake detection platform 2 can accurately measure the braking force performance of the automobile, and the detection accuracy is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (7)

1. The utility model provides a loaded brake check out test set, includes base (1), locates brake in base (1) and detects platform (2), the brake is detected the platform (2) internal rotation and is provided with cylinder group (3), still installs in brake detection platform (2) and is used for driving cylinder group (3) pivoted driving motor (4), cylinder group (3) are including main cylinder (31) and auxiliary drum (32), it is provided with third cylinder (5), its characterized in that to rotate between main cylinder (31) and auxiliary drum (32): two groups of roller sets (3) are symmetrically arranged along the central axis of the brake detection table (2) in the length direction; the axes of the main roller (31), the auxiliary roller (32) and the third roller (5) are parallel to each other; a lifting component (7) for adjusting the height of the brake detection platform (2) is arranged at the bottom of the brake detection platform (2); the lifting assembly (7) comprises an air spring (71) arranged on the base (1); a plurality of air springs (71) are arrayed along the inner bottom surface of the base (1) in a rectangular manner; the air spring (71) vertically extends upwards and is fixed with the bottom of the brake detection table (2).

2. The loaded brake detection device of claim 1, wherein: the outer side of the brake detection table (2) is provided with a guide device (8) used for limiting the brake detection table (2) to slide along the height direction of the base (1).

3. The loaded brake detection apparatus of claim 2, wherein: the brake detection table (2) and the base (1) are both rectangular box structures with openings at the upper ends; the guide device (8) comprises a T-shaped block (81) fixed on the outer side wall of the brake detection table (2); the number of the T-shaped blocks (81) is four, and the four T-shaped blocks (81) are respectively fixed on four outer side walls of the brake detection table (2); and a T-shaped groove (11) matched with the T-shaped block (81) is formed in the inner side wall of the base (1).

4. The loaded brake detection device of claim 1, wherein: four air springs (71) are provided.

5. The loaded brake detection device of claim 1, wherein: fixing seats (6) are fixed at positions, located at two ends of the third roller (5), in the brake detection table (2); one opposite sides of the two fixed seats (6) are of an opening structure; a vertical fixing column (62) is fixed in the fixing seat (6); a sliding sleeve (63) is sleeved on the fixed column (62); a buffer spring (65) is sleeved on the fixed column (62) and positioned at the lower end of the sliding sleeve (63); the end part of the third roller (5) is rotatably connected with the sliding sleeve (63).

6. The loaded brake detection apparatus of claim 5, wherein: dovetail grooves (61) are formed in two opposite inner side walls of the fixed seat (6); the length direction of the dovetail groove (61) is consistent with the height direction of the fixed seat (6); and dovetail blocks (64) matched with the dovetail grooves (61) are arranged on two sides of the sliding sleeve (63).

7. The loaded brake detection apparatus of claim 5, wherein: a detection assembly (9) for detecting a wheel to be detected is arranged in the brake detection table (2); the detection assembly (9) comprises a photoelectric switch (91) which is arranged in the brake detection platform (2) and is positioned on one side of the fixed seat (6), and a proximity sensor (92) which is arranged in the brake detection platform (2) and is positioned right below the third roller (5); and a rotating speed sensor is arranged on the third roller (5).

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